In the fourth episode of DNA Lover, the romantic comedy continues to unravel
the intricate relationships between its characters. The episode delves deeper
into the complexities of love, genetics, and family dynamics, as the
protagonists navigate their feelings and confront unexpected revelations.

The episode opens with So-jin, still reeling from the discovery of Yeon-woo's "Indecent Octopus Tentacles Gene," seeking solace in the company of her friend, A-ri. A-ri, ever the optimist, advises So-jin to embrace her fate of being attracted to cheating men. Meanwhile, Yeon-woo grapples with the unexpected attention from a stranger and the responsibility of caring for an abandoned baby.
As the episode progresses, So-jin's avoidance of Yeon-woo becomes increasingly apparent. Her reluctance to discuss the DNA test results intensifies her conflict with him, while Yeon-woo's growing disappointment with his father's affairs mirrors So-jin's own frustrations.
The episode introduces new characters and subplots, including Sung-mi's blossoming relationship with Jung-tam and Mi-eun's persistent pursuit of Gang-hun. These relationships provide a contrast to the central love triangle between So-jin, Yeon-woo, and Gang-hun.
A significant turning point in the episode occurs when So-jin encounters Yeon-woo's mother at the research center. The mother's struggles with her husband's infidelity mirror So-jin's own experiences, leading to a heated confrontation. However, So-jin's anger is tempered by her growing concern for the mother's well-being.
Yeon-woo's relationship with his father also takes center stage. His attempts to confront his father about his philandering ways are met with resistance, highlighting the generational divide between them.
The episode culminates in a series of dramatic events. So-jin's encounter with her ex-boyfriend, Sang-min, leads to a dangerous confrontation. Gang-hun's timely intervention saves So-jin from harm, but it also reveals the growing tension between him and Yeon-woo.
As the episode draws to a close, a surprising twist emerges. So-jin discovers that Yeon-woo possesses the "healing gene," offering a glimmer of hope for their relationship. However, Yeon-woo's resistance to her methods and his growing frustration with her judgmental attitude create a barrier between them.
The episode ends on a cliffhanger, as Yeon-woo and So-jin share a passionate kiss, suggesting a potential reconciliation. However, the underlying tension between them and the complexities of their relationship remain unresolved.